If you buy a complete crank check it for true, the last wiseco crank I used had 9 thou run-out. I gave it to a local guru who tweaked it to less than a thou and it never had run so smooth. Put mains in regardless, gearbox bearings check by feel. If there's any doubt to the counter shaft bearing behind sprocket drop one of those in too. Lots of compressed air and brake cleaner through all of the oil galleries. And don't over tension the cam cap bolts. Check the little screen on the bottom fitting of the oil tank in the frame as they can choke up on metal from failing big end and starve the oil pump and cause head cam journals to bind.